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The radiative corrections to the τ−→(P1P2)−ντ (P1,2=π, K) decays are calculated for the first time including the structure-dependent real photon corrections, which are obtained using resonance chiral theory. Our results, whose uncertainty is dominated by the model dependence of the resummation of the radiative corrections and the missing virtual structure-dependent contributions, allow for precise tests of Cabibbo-Kobayashi-Maskawa unitarity, lepton flavor universality, and nonstandard interactions. Published by the American Physical Society 2024
Escribano et al. (Mon,) studied this question.
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